​Chemistry is the study of matter.

Matter is anything that has mass and takes up space.

All organisms are made of matter.

Atoms are the building blocks of matter.

​Atoms are made up of neutrons, protons, and electrons,

​ The nucleus is the center of the atom

neutrons and protons are located in the center of the nucleus. Protons are positively charged particles (p+).

Neutrons are particles that have no charge (n0 ).

Electrons are negatively charged particles (e – ) that are located outside the nucleus.

​Draw and lable in our notebook

​Electrons move around on the outside of the nucleus in energy levels.

​An element is a pure substance that cannot be broken down into other substances.

The periodic table of elements organizes information about elements in rows, called periods, and columns, called groups. A periodic table is located inside the back cover of this workbook. Each block includes the element’s name, number, symbol, and mass. Living things are composed mainly of three elements—carbon, hydrogen, and oxygen

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The Periodic Table of elements organizes information about elements in

ROWS, called PERIODS

COLUMS , called GROUPS.

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